Home / 31,613.66-43,608.59-20,279.13

Finding the Fourth Proportional to 31,613.66, 43,608.59 and 20,279.13

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Solution

The fourth proportional to 31,613.66, 43,608.59 and 20,279.13 is: 27,973.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,613.66 : 43,608.59 = 20,279.13 : x
  2. Step 2: Convert to fraction form
    31,613.66/43,608.59 = 20,279.13/x
  3. Step 3: Cross multiply
    31,613.66x = 43,608.59 × 20,279.13
  4. Step 4: Simplify right side
    31,613.66x = 884,344,240.38
  5. Step 5: Solve for x
    x = 884,344,240.38/31,613.66
  6. Step 6: Final answer
    x = 27,973.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.